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| Aluminum Stranded Conductor (AAC) Specifications | |||||||
|---|---|---|---|---|---|---|---|
| Code Name | Sectional Area | Wire Diameter & Stranding | Diameter of Conductor | Nominal Breaking Load | Linear Mass | Maximum Resistance at 20℃ | |
| mm² | mm | No. | mm | kN | kg/km | Ω/km | |
| Leo | 34.36 | 2.5 | 7 | 7.5 | 5.71 | 94.1 | 0.833 |
| Leonids | 41.58 | 2.75 | 7 | 8.25 | 6.72 | 113.9 | 0.689 |
| Libra | 49.48 | 3 | 7 | 9 | 7.98 | 135.5 | 0.579 |
| Mars | 77.31 | 3.75 | 7 | 11.25 | 11.8 | 211.7 | 0.370 |
| Mercury | 111.33 | 4.5 | 7 | 13.5 | 16.9 | 304.9 | 0.258 |
| Moon | 124.04 | 4.75 | 7 | 14.25 | 18.9 | 339.7 | 0.232 |
| Neptune | 157.62 | 3.25 | 19 | 16.25 | 24.7 | 433.7 | 0.183 |
| Orion | 182.80 | 3.5 | 19 | 17.5 | 28.7 | 503.0 | 0.157 |
| Pluto | 209.85 | 3.75 | 19 | 18.75 | 31.9 | 577.4 | 0.137 |
| Saturn | 261.54 | 3 | 37 | 21 | 42.2 | 721.4 | 0.110 |
| Sirius | 306.94 | 3.25 | 37 | 22.75 | 48.2 | 846.6 | 0.094 |
| Taurus | 336.69 | 4.75 | 19 | 33.25 | 51.3 | 928.6 | 0.0857 |
| Triton | 408.65 | 3.75 | 37 | 26.25 | 62.2 | 1127.1 | 0.0706 |
| Uranus | 506.04 | 3.25 | 61 | 29.25 | 75.2 | 1398.5 | 0.0572 |
| Ursula | 586.89 | 3.5 | 61 | 31.5 | 87.3 | 1621.9 | 0.0493 |
| Venus | 673.73 | 3.75 | 61 | 33.75 | 97.2 | 1861.9 | 0.0429 |
Note: The outermost layer is twisted to the right (Z).
Frequently Asked Questions (FAQ)
What is an Aluminum Stranded Conductor (AAC)?
An Aluminum Stranded Conductor (AAC) is a refined aluminum stranded wire with a minimum purity of 99.7%. It is widely used in overhead electricity transmission and distribution lines, particularly in urban areas where spacing is short and supports are close.
What do the Code Names like "Leo" or "Mars" represent?
These code names (such as Leo, Libra, Mars, and Orion) are standard industry designations used to specify distinct physical dimensions, stranding structures, and electrical properties of the conductors, making ordering and technical referencing easier.
Why is the outermost layer of AAC twisted to the right (Z)?
The right-hand lay (Z-direction) is the standard twisting direction for the outermost layer of stranded conductors. This configuration ensures compatibility with standard helical line fittings, accessories, and tension joints during installation.
What is the maximum resistance temperature standard for AAC?
The maximum direct current (DC) resistance values for AAC conductors are standardly calculated and tested at 20°C (68°F) to ensure consistent electrical performance evaluation across different environments.
What are the primary benefits of choosing AAC over other conductors?
AAC offers excellent corrosion resistance, high electrical conductivity, and a very economical cost-to-weight ratio. Because it is lighter than steel-reinforced conductors (ACSR), it reduces the structural load requirements on poles and towers.